Biological Assembly 1  

 3D View: Structure

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 3-mer - A2B1 

Biological assembly 1 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 66.60 kDa 
• Atom Count: 4664 
• Modelled Residue Count: 600 
• Deposited Residue Count: 600 
• Unique protein chains: 2

5FJB

Cyclophilin A Stabilize HIV-1 Capsid through a Novel Non- canonical Binding Site

• DOI: 10.2210/pdb5FJB/pdb
• EMDataResource: EMD-3076

• Classification: ISOMERASE
• Organism(s): Human immunodeficiency virus 1, Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2015-10-07 Released: 2016-03-16 
• Deposition Author(s): Liu, C., Perilla, J.R., Ning, J., Lu, M., Hou, G., Ramalhu, R., Bedwell, G.J., Ahn, J., Shi, J., Gronenborn, A.M., Prevelige Jr, P.E., Rousso, I., Aiken, C., Polenova, T., Schulten, K., Zhang, P.

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 9.00 Å
• Aggregation State: HELICAL ARRAY 
• Reconstruction Method: HELICAL 

Literature

Cyclophilin a Stabilizes the HIV-1 Capsid Through a Novel Non-Canonical Binding Site.

Liu, C., Perilla, J.R., Ning, J., Lu, M., Hou, G., Ramalho, R., Himes, B.A., Zhao, G., Bedwell, G.J., Byeon, I., Ahn, J., Gronenborn, A.M., Prevelige, P.E., Rousso, I., Aiken, C., Polenova, T., Schulten, K., Zhang, P.

(2016) Nat Commun 7: 10714

• PubMed: 26940118 
• DOI: 10.1038/ncomms10714
• Primary Citation of Related Structures:  
  5FJB


• PubMed Abstract: 
  

The host cell factor cyclophilin A (CypA) interacts directly with the HIV-1 capsid and regulates viral infectivity. Although the crystal structure of CypA in complex with the N-terminal domain of the HIV-1 capsid protein (CA) has been known for nearly two decades, how CypA interacts with the viral capsid and modulates HIV-1 infectivity remains unclear. We determined the cryoEM structure of CypA in complex with the assembled HIV-1 capsid at 8-Å resolution. The structure exhibits a distinct CypA-binding pattern in which CypA selectively bridges the two CA hexamers along the direction of highest curvature. EM-guided all-atom molecular dynamics simulations and solid-state NMR further reveal that the CypA-binding pattern is achieved by single-CypA molecules simultaneously interacting with two CA subunits, in different hexamers, through a previously uncharacterized non-canonical interface. These results provide new insights into how CypA stabilizes the HIV-1 capsid and is recruited to facilitate HIV-1 infection.

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Organizational Affiliation: 

Pittsburgh Center for HIV Protein Interactions, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15260, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
GAG POLYPROTEIN	A, B	218	Human immunodeficiency virus 1	Mutation(s): 0
Find proteins for P04591 (Human immunodeficiency virus type 1 group M subtype B (isolate HXB2)) Explore P04591  Go to UniProtKB:  P04591

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
PEPTIDYL-PROLYL CIS-TRANS ISOMERASE A	C	164	Homo sapiens	Mutation(s): 0  Gene Names: PPIA, CYPA EC: 5.2.1.8
Find proteins for P62937 (Homo sapiens) Explore P62937  Go to UniProtKB:  P62937
NIH Common Fund Data Resources
PHAROS:  P62937 GTEx:  ENSG00000196262

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 9.00 Å
• Aggregation State: HELICAL ARRAY 
• Reconstruction Method: HELICAL 

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2015-10-07 
• Released Date: 2016-03-16 
Deposition Author(s): Liu, C., Perilla, J.R., Ning, J., Lu, M., Hou, G., Ramalhu, R., Bedwell, G.J., Ahn, J., Shi, J., Gronenborn, A.M., Prevelige Jr, P.E., Rousso, I., Aiken, C., Polenova, T., Schulten, K., Zhang, P.

Revision History  

• Version 1.0: 2016-03-16
  Type: Initial release
  
• Version 1.1: 2017-08-23
  Changes: Data collection